stoecklin



(Model.)

- 2l Sheets-Sheet 2. E. STOEOKLIN.

VISE.

No. 394,793. Patented Deo. 18, 1888.

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ERNEST STOECKLIN, OF NEY YORK, N. Y.

VISE.

SPECIFICATION forming part of Letters Patent No. 394,793, dated December 18, 1888.

Application filed February l, 1886. Serial No. 190,424. (Model.)

. and also to drill-vises, whereby work can be clamped readily and held securely while drilling or tapping the same.

The invention relates to that class ot vises which comprise a fixed jaw-holder and a movable jaw-holder and a bar secured in fixed position to the fixed jaw-holder. This bar hasratchet. teeth or notches, and in the mov-,

able jaw-holderis a pawl and a lever. Then the lever is moved in one direction or lifted, the pawl is, by cam projections on the lever, disengaged from the ratchet. toothed or notched jaw-holder, being slid vup to the work, and when said lever is swung downward or moved in the opposite direction the pawl is allowed to come into engagement with the toothed or notched bar, and camsur'faces upon the lever act upon the movable jaw-holder to force it ahead and toward the fixed jaw. In my improved vise the pawl which engages the toothed or notched bar is not pivoted iu the movable jaw-holder, but is pivoted in or carried ou a pawl-carrier which slides on the bar, and the operatinglever is also pivoted to this movable pawlcarrier. The operating-lever and the sliding pawl-carrier are accommodated within a notch or mortise in the movable j aw-holder, and in shift-ing the movable jaw-holder to bring it up to the work all three parts move together as one piece, although by swinging the operating-lever the sliding pawl-carrier and the lever-pivot are held immovable by the engagement of said pawl with the notched bar, while the movable jaweholder is forced toward the fixed jaw-holder to clamp the work.

I also apply a spring between said movable j aw-holder and the pawl-carrier to insure the quick backward movement of the jaw-holder to release the work when "the lever is swung into position to release said movable jawholder.

The invention will be hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure l is a longitudinal section of a vise embodying my invention, with the operatingdever swung upward, so as to release the movable jaw. Fig. 2 is a plan of the vise, a portion of the movable jaw-holder being broken away to show the arrangement of the springs between it and the pawl-carrier. Fig. 3 is a sectional elevation of the movable jaw-holder and the base portion on which it slides, the operating-lever being shown as partly swung downward, so as to permit the pawl to come into engagement with the toothed bar and to act upon the movable j aw. Fig. et is a rear elevation of the vise; and Fig. 5 is an elevation of the movable j aw-holder and the base portion upon which it slides, being in part a section upon about the plane indicated by the dotted line a: .00, Fig. 2, and showing the operatinglever in the position shown' in Fig. 1, or swung upward, so as to disengage the pawl i'rom the toothed bar. Y

Similar letters of reference designate corresponding parts in all the iigures.

A designates the iixed jaw-holder, which has a 1'earwardly-extendin g arm or base-plate, A, whichk forms the stationary bottom of the vise, and this arm or base-plate may be secured to a bench or other suitable support by bolts inserted through lugs or ears a, which are provided upon opposite sides ot it, as shown in Fig. 2.

B designates the movable jaw-holder, which slides toward and from the iixed jaw-holder A to grip and release the work.

As here represented, the base portion or extension A has dovetailed rails or raised ribs a', with which gibs l) upon the movable jaw-holder B engage, as best shown in Fig. 4, and by this construct-ion the movable jawholder B is free to slide upon the gibs or ways a and at the same time is held rmly thereon against any rising movement.

The iixed and movable j aw-holders A B are provided with face-plates or jaws proper, s, which are adapted to clamp upon the work placed between them. These jaws proper or face-plates are or may be provided with cavities c, of spherical or concave form, and may also have V-shaped cavities or indentations o. These cavities or indentations in the faces ot the jaws proper or face-plates s IOO enable them to securely hold work having rounded surfaces or of other peculiar shapes. I also provide the jaw-holders A, l; with guards C, which have at the ends rcarwardly-projecting ears or lu e2, which einn brace the jaw-holder, and are pivoted thereto at c3 by screws or other pins or pivots. The guards C thus supported may, when desired, be swung back away from the faces of the jaws, as shown by dotted lines in Fig. l, and when swung downward over the faces of the jaws, as shown by full lines in Fig. l, they serve as rests on which the work will be supported and prevented from dropping downwardpvhile the movable ljaw-holder lis lforced up to clamp the work.

D designates a bar which is secured at one end rigidly to the fixed jaw-holder A, and passes freely through the mortise b in the movable jaw-holder 13. As here represented, the bar D is inserted between lugs or ears (ai, provided upon the fixed jaw-holder A, and a pin, (l, is inserted through these lugs or ears and through the bar D. The bar D is provided upon its under side with a series ot tine ratchet-shaped teeth or notches, d', as best shown in Fig. l.

E designates a pawl-carrier, which slides upon the bar D, and consists oit a piece ot' metal having snlfistantially fiat and parallel sides, as shown in Fig. -l-. The front end ot' this pawl-carrier E is closed below the bar by a web, as shown at e; but behind this web the pawl-carrier is open below the bar D, and a cavity is thus afforded for the reception of a pawl, E', which is movable in the pawl-carrier to engage with or to disengage it from the rack d upon the under side of the bar D. As here represented, the pawl E is pivoted at e in said pawl-carrier, and is engaged with and disengaged from the bar D by swinging upon this pivot, the amount of its swinging movenient being controlled by a piu, eg, which is iixed in the pawl. E and works in arc-shaped slots c3 in the pawl-carrier. lVhen the pawl is not depressed, lit is always held in engagement with the rack d on the bar D by means of a spring, e, acting upon the rear side of the pawl, and which is held in position in the pawl-carrier, as by pins e5 e.

F designates an operating lever or handle, which is hollow and open on the under side, as shown. best in Fig. 4, but also in Figs. l and 3, so that when swung downward it will pass over and inclose the bar D. This lever is mounted upon a pivot-1 in, which is fast in the pawl-carrier E, and the ends ot' which project and play in slots b2 in the movable jaw-holder l. The pivoted end of the lever F is forked or bit'urcated, as shown in Figs. 2 and et, so as to embrace the pawl-carrier E, and both the lever and 1:)awl-carrier are aeeounnodated in a notch or mortise, h3, in the movable jaw-holder l5. 'Upon the front side of the lever F are cam-shaped surfaces f2, whiclnwhen the lever is swung downward, or

or notch Ui, and inasmuch as the lever-pi vot f is thenv held by the liawl-carrier and pawl E E innnovable relatively to the bar D such action of the cani-surfaces forces the movable jaw-holder l slightly ahead and toward the fixed jaw-holder A. l have here represented the surfaces upon which the cam portions f2 ot' the le ver F bear as formed by a steel face-plate]l forming the 'front wall ot' the notch or inortlse h3, and which may be hardened to resist wear.

As is shown best in Fig. 5, the distance from the center ot' the lever-pivot j' to the front edges of the lever upon the line s is considerablyless than from the center of said pivot to the bottom of the lever upon the line 32, and therefore it will be understood that the surtaeesf2 are curved or of gradually-im creasing radius from the front edges to the bottom ot' the forked end-of the lever and constitute cam-surfaces for acting upon the movable jaw-holder l.

The pin e2, which is Vfast in the pawl E and plays in the arc-shaped slots ci in the pawlcarrier, projects beyond the opposite sides ot' the pawl-carrier, as shown best in Fig. 4, and upon `its ends aet cam projections f, with which the bifurcated or forked end ot' the lever is provided, and which are best shown in Fig. 5. lVhen the lever F is swung upward into position to release the movable jawholder B, as shown in Figs. l and 5, the cam projections f1 of the lever rise above the pin e2, as shown in Fig. 5, and by actinupon said pin the pawl F is pushed or swung downward, so that its toothed tace disengaged from the bar D, as shown in Fig. l. Then the operating-lever F is swung t'rom its horizontal position, where it has been placed to force the movable jaw-holder B toward the fixed jawholder A upward to the position shown in Fig. 2l, and then to the extrtnne upright position shown in Figs. l and 5, the cani-surfaces f2 relax their pressure against the inovable jaw-holder l before the cam projections j act upon the pin c2 to disei'lgage the pawl E :from the rack d. It is desirable that as soon as the pressure of the operating-lever F upon the movable jaw-holder B is relaxed said jaw should be retracted slightly to release the work, and this l accomplish by a spring or sprin interposed between the n'iovable jawholder l and the pawl-carrier E, which by its pawl E is locked to the bar D.

As l have before described, the ends of the lever-pivot f project into and play horizontally in recesses or cavities b2 in the movable j aw-holder l, exteudin into opposite sides of the mortise or notch U3. As best shown in Fig. 2, these cavities or recesses h2 have proj ectin g plates or bearers g projecting across their open ends and secured to the movable jaw-holder l. In the projectiu ends of the pin f are cross-pins g', which are guided in IOO IIO

the supports or bearers g, and upon which are springs G. It is true that the springs G, which bear at their one end upon the supports or guides g, forming parts of the movable jaw-holder B, bear at their opposite ends against the proj eeting ends of the lever-pivot f; but inasmuch as this lever-pivot is fast in the pawl-carrierE, the springs G may be considered as interposed b'etween the movable jaw-holder and said pawl-carrier. As the lever F is swung upward and its cam-surfaces f2 relaxed through pressure against the movable jaw-holder, the pawl-carrier E is held immovable on the bar D by its Apawl E', and consequently as 'fast as the pressure of the cam-surfaces f2 is relaxed upon the movable jaw-holder B said jaw-holder is drawn backward or retracted by the springs G and caused to release the work.

In operating-the lever F to grip and release pieces of work of uniform size it is only swung upward to the position shown in Fig. 3, and the pawl E is never disengaged from the bar D; but when a piece of work larger or smaller than the previous one is to be received the lever F is swung upward to its extreme position, as shown in Figs. l, 4, and 5, so that its cam projections f4 act upon the pin e2 and disengage the pawl E from the bar D. The movable jaw-holder B may then be slid upon the extension or base-piece A', so as to open the jaws to the desired width.

That I claim as my invention, and desire to secure by Letters Patent, is-

l. The eombination,in avise, of a fixed and a movable jaw-holder, a notched or toothed bar permanently secured to one holder, and on which the other is adjustable, a pawl-carrier independently movable in the movable jawholder, having a pawl adapted to engage the vgage it from the said bar when said lever is swung in the reverse direction, and a spring or springs interposed between the movable jaw- .holder and the pawl-carrier, to operate as set forth.

2. The combination, with the movable jawholder of a vise and a bar along which said holder is movable, and which has ratchet teeth or notches, of a pawl-carrier sliding on the bar and a pawl movable in said carrier to grip and release the bar, an operating-lever pivoted in said pawl-carrier and having upon it the cams f2 and f4, and asprin g applied be* tween said jaw-holder and pawl-carrier to insure the quick backward movement of the jawholder when said lever is swung into position to release it, substantially as herein described.

The combination, with the movable jawholder and a toothed or notched gripping-bar, the said holder being notched or mortised at Z13, of the pawl-carrier E, sliding on said bar, and the lever F, straddling the pawl-carrier and pivoted thereto by a pin, f,projeeting beyond the sides of the lever, both the lever and pawl-earrier being,I accommodated in the notch or inortise of the jaw-holder, and the lever having the eam portions f2 f4, the pawl E in the pawl-earrier, and springs G in the holder, acting directly upon the projectingl ends of the pin f, substantially as herein described.

ERNEST STOECKLIN.

Vitnesses:

C. AUGUST SeHoPPER, FREDERICK MISHAEL. 

